Pressure relief butterfly valve
By incorporating a pressure relief orifice and a sealing cap into the butterfly valve, and utilizing a reset spring assembly, the problems of high opening torque and vibration in traditional butterfly valves are solved, achieving low-torque opening and high-reliability sealing, and simplifying the operation process.
CN121111997BActive Publication Date: 2026-06-26NEWAY VALVE (SUZHOU) CO LTD
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Patent Information
- Application Number
- CN202511144395.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2045-08-15
AI Technical Summary
Technical Problem
Traditional triple-eccentric butterfly valves require a large torque to open, have insufficient valve stem stiffness, are prone to vibration, and affect reliability and safety.
Method used
A pressure relief butterfly valve is designed, which features a pressure relief through-hole on the butterfly plate and a sealing cover on the rotating block. The valve fits tightly in the sealing state and separates in the pressure relief state. Combined with a reset spring component, it achieves automatic reset, reduces opening torque, and prevents vibration.
Benefits of technology
It reduces the torque required to open the valve, avoids vibration and wear, improves sealing performance and reliability, simplifies the operation process, and reduces operating costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application relates to butterfly valve technical field, specifically to a kind of pressure relief butterfly valve.The pressure relief butterfly valve, including: valve body, valve body has medium passage;Butterfly plate, butterfly plate rotatably arranged in medium passage, butterfly plate is equipped with pressure relief through-hole;Rotating block, rotating block is sleeved on valve stem, rotating block is tightly matched with valve stem, rotating block is located butterfly plate side, rotating block is equipped with sealing cover, in sealing state, sealing cover is tightly matched with pressure relief through-hole, in pressure relief state, sealing cover is separated from pressure relief through-hole, valve stem is used to drive rotating block movement, to make rotating block switch from sealing state to pressure relief state;Reset elastic force component, reset elastic force component is used to provide the elastic driving force of rotating block from pressure relief state switch to sealing state.In pressure relief state, sealing cover is separated from pressure relief through-hole, medium can pass through pressure relief through-hole and flow, to reduce the torque required when valve is opened, avoid valve vibration and wear problem, improve the reliability and safety of valve.
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